The H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd is a semi-automatic modern sporting rifle built for shooters who want proven reliability and precision in a .308 NATO platform. Using a short-stroke gas piston system with an adjustable regulator, this rifle cycles cleanly with or without a suppressor. It comes ready for optics, lights, and grips with a slimline M-LOK handguard and an ambidextrous lower for left- or right-handed use.
| Manufacturer | Heckler & Koch |
|---|---|
| Model | MR762 A4 |
| Material | Aluminum upper/lower receiver, steel barrel (per manufacturer specs) |
| Compatibility | 7.62x51mm NATO / .308 Winchester |
| Finish | Hard-coat anodized black |
| Weight | ~8.6 lbs (empty, per manufacturer specs) |
| Condition | New |
Key Features
- Short-stroke gas piston system — Why it matters: Keeps carbon and fouling out of the action, so you shoot longer between cleanings and get better reliability with suppressors.
- Adjustable gas regulator — Why it matters: You can tune the rifle to run smoothly with supersonic, subsonic, or suppressed loads without over-gassing the bolt.
- 16.5-inch threaded barrel (5/8×24) — Why it matters: Shorter barrel keeps the rifle handy in tight spaces, and the threads let you attach a muzzle brake or suppressor in seconds.
- Ambidextrous lower receiver — Why it matters: Safety selector, bolt release, and magazine catch are mirrored on both sides, so left-handed shooters don’t have to break their grip.
- M-LOK slimline handguard — Why it matters: Lightweight and low-profile, it lets you mount lights, lasers, or bipods directly without bulky rails.
Who It’s For
This rifle is built for families who want a single platform for target shooting, hunting, and home defense training. It’s also a great choice for newer shooters ready to step up from 5.56 NATO — the .308 recoil is manageable with the adjustable stock and gas system. Experienced shooters will appreciate the fit and finish that comes from a German engineering pedigree.
Pros & Cons
- Pros: Reliable in dirty conditions, accurate out of the box, easy to suppress, ambidextrous controls, modular handguard.
- Cons: Heavier than some comparable rifles (8.6 lbs empty), and the 10-round magazine may need an upgrade for extended range sessions.
Comparison vs. Competitors
| Feature | H&K MR762 A4 | Geissele Super Duty .308 | Lone Wolf Distributors Alpha Wolf .308 |
|---|---|---|---|
| Operating System | Short-stroke gas piston | Direct impingement | Direct impingement |
| Barrel Length | 16.5″ threaded | 16″ threaded | 16″ threaded |
| Weight (empty) | ~8.6 lbs | ~8.2 lbs | ~7.9 lbs |
| Handguard | M-LOK slimline | M-LOK | M-LOK |
| MSRP | $4,479 | $2,999 | $1,899 |
FAQ
What type of ammunition does the H&K MR762 A4 use?
It chambers 7.62x51mm NATO and .308 Winchester. Stick to quality factory loads for best accuracy. Avoid steel-case ammo for reliability.
Can I mount a suppressor on the 16.5-inch barrel?
Yes. The barrel is threaded 5/8×24 and has a removable flash hider. Use any compatible .30-caliber suppressor. The adjustable gas regulator helps tune the action for suppressed shooting.
Is the MR762 A4 legal in all states?
It ships with a 10-round magazine, which complies with most state capacity laws. Check your local regulations before ordering. We ship to all 50 states.
How does the short-stroke gas piston system benefit a new shooter?
It keeps the bolt carrier group cleaner and cooler, which means fewer malfunctions. That builds confidence for someone learning to shoot a .308.
Trust & Delivery
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Last updated: April 2026
Browse more in our AR Rifles or see our Suppressors and Optics to complete your setup.
FFL Transfer & Firearms Laws for H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd
All firearms, including the H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: AR Rifles.
What tags or features does this product have?
Key features and tags for this product include: .
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
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FFL Transfer & Firearms Laws
All firearms, including the H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd, must be shipped to a licensed Federal Firearms License (FFL) dealer. A background check and any required local paperwork must be completed before you can take possession.
How It Works
- Place your order online.
- Send us your preferred local FFL dealer info.
- We ship the firearm to your FFL after verification.
- Complete background check and pick up from your dealer.
Legal Compliance
We comply with all U.S. firearm laws. It is your responsibility to ensure the H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd is legal in your state. Some states (e.g. CA, NY, NJ) have restrictions on magazine size or certain features.
Helpful Links
Need help? Contact our team — we’ll guide you through selecting a compliant firearm and the FFL transfer process.
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